Nissan Altima (L32) 2007-2012 Service Manual ≻ Security control system sedan with intelligent key ≻ Component diagnosis ≻ B2556 push-button ignition switch

Nissan Altima (L32) 2007-2012 Service Manual: B2556 push-button ignition switch

Description

The switch that changes the power supply position. BCM maintains the power supply position status. BCM changes the power supply position with the operation of the push-button ignition switch.

DTC Logic

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.PERFORM DTC CONFIRMATION PROCEDURE

1. Start the engine and wait for at least 100 seconds.

2. Check “Self Diagnostic Result” with CONSULT-III.

Is DTC detected? YES >> Refer to SEC-271, "Diagnosis Procedure".

NO >> Inspection End.

Diagnosis Procedure

1.CHECK PUSH-BUTTON IGNITION SWITCH INPUT SIGNAL

1. Turn ignition switch OFF.

2. Disconnect push-button ignition switch harness connector.

3. Check voltage between push-button ignition switch harness connector and ground.

Is the inspection result normal? YES >> GO TO 2

NO >> GO TO 4

2.CHECK PUSH-BUTTON IGNITION SWITCH

Refer to SEC-272, "Component Inspection".

Is the inspection result normal? YES >> GO TO 3

NO >> Replace push-button ignition switch. Refer to SEC-410, "Removal and Installation".

3.CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident".

>> Inspection End.

4.CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT FOR SHORT

1. Disconnect BCM harness connector and IPDM E/R harness connector.

2. Check continuity between push-button ignition switch harness connector and ground.

Is the inspection result normal? YES >> Replace BCM. Refer to BCS-96, "Removal and Installation".

NO >> Repair harness or connector.

Component Inspection

1.CHECK PUSH-BUTTON IGNITION SWITCH

1. Turn ignition switch OFF.

2. Disconnect push-button ignition switch harness connector.

3. Check continuity between push-button ignition switch terminals under the following conditions.

Is the inspection result normal? YES >> Inspection End.

NO >> Replace push-button ignition switch. Refer to SEC-410, "Removal and Installation".

B2555 stop lamp

Description BCM detects the stop lamp status and confirms the stop lamp switch ON/OFF status. BCM confirms the engine start condition according to the stop lamp switch ON/OFF status. DTC Logic ...

B2557 vehicle speed

Description BCM receives the 2 vehicle speed signals via CAN communication. One signal is transmitted by the “unified meter”. Another signal is transmitted by “ABS actuator and electric uni ...

Other materials:

Basic inspection
DIAGNOSIS AND REPAIR WORKFLOW Trouble Diagnosis Flow Chart Trouble Diagnosis Procedure INTERVIEW WITH CUSTOMER Interview with the customer is important to detect the root cause of CAN communication system errors and to understand vehicle condition and symptoms for proper trouble diagnosis. ...

IPDM E/R (Intelligent power distribution module engine room)
Reference Value VALUES ON THE DIAGNOSIS TOOL TERMINAL LAYOUT PHYSICAL VALUES Wiring Diagram — Coupe Wiring Diagram — Sedan Fail Safe CAN COMMUNICATION CONTROL When CAN communication with ECM and BCM is impossible, IPDM E/R performs fail-safe c ...

Power supply and ground circuit
BCM Diagnosis Procedure 1. CHECK FUSE AND FUSIBLE LINK Check if the following BCM fuse or fusible link are blown. Is the fuse or fusible link blown? YES >> Replace the blown fuse or fusible link after repairing the affected circuit. NO >> GO TO 2 2. CHECK POWER SUPPLY CIRC ...